Observation by Chris Hooker: Mercury, 5th July 2022

Uploaded by

Chris Hooker

Observer

Chris Hooker

Observed

2022 Jul 05 - 06:15

Uploaded

2022 Jul 07 - 21:13

Objects

Mercury

Equipment

254 mm F/6.3 Newtonian
5x IR Barlow lens
Baader 685 nm long-pass & Thorlabs 850 nm short-pass filters
ZWO ASI174 mono camera

Exposure

0.33 msec @ F/32

Location

Didcot, Oxfordshire

Target name

Mercury

Title

Mercury, 5th July 2022

About this image

Mercury is now quite bright thanks to its gibbous phase, but is moving closer to the Sun. For this observation and the last few I located Mercury by offsetting from Venus, which was easy to acquire in the finder. This allowed me to start imaging Mercury before the Sun was visible rather than waiting to offset from the Sun itself, by which time the seeing would have degraded further.

The seeing was below average for this session (Ant III - IV), and the data required manual frame selection in order to reveal any of the surface features. The result agrees fairly well with a blurred version of the WinJupos map for the day.

Files associated with this observation

Mercury 5 Jul 22.png (53.6 kB)

Like this image

Jeremy Shears, Ron Johnson, Mattia Piccoli, Steve Knight, Mike Harlow

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